2FY15940n/aENSG00000234414n/aP0DJD3n/aNM_005058NM_001320944NM_001320945n/aNP_001307879n/aRNA-binding motif protein, Y chromosome, family 1 member A1/C is a protein that in humans is encoded by the RBMY1A1 gene.

[3][4][5] This gene encodes a protein containing an RNA-binding motif in the N-terminus and four SRGY (serine, arginine, glycine, tyrosine) boxes in the C-terminus.

Multiple copies of this gene are found in the AZFb azoospermia factor region of chromosome Y and the encoded protein is thought to be involved in spermatogenesis.

Most copies of this locus are pseudogenes, although six highly similar copies have full-length ORFs and are considered functional.

Four functional copies of this gene are found within inverted repeat IR2; two functional copies of this gene are found in palindrome P3, along with two copies of PTPN13-like, Y-linked.